<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>案例5</title>
		<link rel="stylesheet" type="text/css" href="./css/test5.css"/>
	</head>
	<body>
		<div id="div1">
			<div id="div2">鼠标移入改变样式，鼠标移出恢复</div>
		</div>
	</body>
</html>
<script src="../js/jquery-3.5.1.min.js" type="text/javascript" charset="utf-8"></script>
<script src="./js/test5.js" type="text/javascript" charset="utf-8"></script>